Why Ethical Sourcing for Colored Gemstones Is So Hard—and the Three Strategies Brands Use to Fix It

Ethical sourcing for colored gemstones is complex due to fragmented, artisanal supply chains spanning 47 countries. Brands employ three main strategies: industry-wide collaborations, transparent domestic sourcing, and lab-grown alternatives, each with unique verification methods and limitations.

Simone Dubois

November 8, 2026 · 5 min read

Ethical sourcing for emeralds, rubies, and sapphires is fundamentally harder than for diamonds, and the reason is structural: the colored gemstone supply chain spans 47 countries on six continents and, according to the Gemological Institute of America, still has not achieved an ethical, sustainable mine-to-market chain despite the industry's high profile. Roughly 80 percent of colored gems are mined with hand tools in small-scale operations, which lowers the environmental footprint of individual mines but makes labor conditions far more difficult to regulate. In response, jewelry brands have converged on three distinct strategies—industry-wide collaborations, transparent domestic sourcing, and lab-grown alternatives—and understanding what each one can and cannot verify is the key to decoding a brand's ethical claims.

The Unique Challenges of Ethical Gemstone Sourcing

While diamonds typically come from large-scale industrial operations, colored gemstones are overwhelmingly an artisanal enterprise. SCS Global Services, a sustainability certification organization, frames the trade-off plainly: hand-tool mining means a lower impact on the environment, but it is also more difficult to regulate. A mine the size of a family plot in a remote region resists the audit infrastructure that brought traceability to diamonds.

The Gemological Institute of America's 2016 review in Gems & Gemology described a multibillion-dollar industry whose lack of transparency and traceability affects the physical environment and the quality of life for laborers—without proposing a single-system fix. Price transparency compounds the problem: as one industry analysis notes, a gemstone's valuation depends on color, clarity, cut, origin, treatment, rarity, and market reputation, so there is no commodity-grade benchmark to anchor an audit trail. This fragmentation explains why no diamond-style "conflict-free" label has taken hold for colored stones, and why brands pursue different routes depending on what they can actually verify.

Strategy 1: Industry-Wide Collaborations for Transparency

The first strategy treats the supply chain's fragmentation as a shared problem requiring collective infrastructure. Richemont, Cartier, and Van Cleef & Arpels co-founded the Coloured Gemstones Working Group (CGWG) to, in the words of a Richemont announcement, "tackle the challenges of this complex industry and develop the first coloured gemstones supply chain responsible practices tool set."

The group's most concrete output is the Gemstones and Jewellery Community Platform, which provides learning resources and due diligence tools for industry participants. Its significance is partly regulatory: rubies, sapphires, and emeralds were incorporated into the Responsible Jewellery Council's Code of Practices in 2019, and the CGWG's tools are positioned as the mechanism through which brands and their suppliers can progress on traceability and transparency efforts. The model's strength is reach—it builds shared standards rather than brand-specific promises—but its weakness is the same. As the Richemont announcement itself acknowledges by urging "all our suppliers and actors of the value chain to join the community," effectiveness depends on broad participation across highly diverse mining contexts, and universal adoption remains the open question.

Strategy 2: Transparent Domestic Sourcing

A second strategy sidesteps the global traceability problem by sourcing from a single jurisdiction with enforceable regulations. Montana sapphires are the clearest example: they are U.S.-mined stones whose appeal, as the jewelry brand Envero describes them, lies in "transparent, accountable environmental and labor standards" tied to their domestic origin.

What this looks like in practice is a checklist rather than a certification. The ethical jewelry maker Gardens of the Sun, describing its Montana sapphire sourcing, lists artisanal mining with no heavy machinery, no open-pit mining, no child labor, fair and safe working conditions, post-mining rehabilitation, and government regulation as the verifiable characteristics of that supply chain. Each claim maps to something observable in a single regulated region—direct relationships with miners, compliance with U.S. environmental and labor law—rather than to an audit conducted across a multinational chain of custody.

The limitation is geographic. Montana yields sapphires in distinctive pastel and teal hues, but not emeralds or rubies; a brand committed to domestic sourcing for every colored stone would simply run out of options. Gardens of the Sun's own comparison is instructive: for sapphires from Madagascar—another major source—it rates the ethics at three stars out of five, noting that many mines there are illegal or unregulated and that deforestation has been tied to sapphire mining. Transparent domestic sourcing solves the verification problem for the stones it can access, but it does not address the broader global supply chain for the stones it cannot.

Ethical Gemstone Sourcing Strategies: A Comparative Framework

The three strategies differ less in ambition than in what each can actually verify, and the table below compares them across four dimensions: the sourcing approach itself, the challenge it targets, how claims are verified, and where each falls short.

Three approaches to ethical colored gemstone sourcing
Sourcing Approach	Primary Challenge Addressed	Verification Method	Key Limitation
Industry-wide collaborations (e.g., the Coloured Gemstones Working Group and the Gemstones and Jewellery Community Platform)	Lack of traceability and transparency across a fragmented global supply chain, formalized in the RJC Code of Practices since 2019	Shared resources and due diligence tools for participating brands and suppliers	Effectiveness depends on broad industry participation; universal adoption across diverse mining contexts remains a challenge
Transparent domestic sourcing (e.g., Montana sapphires)	Labor practices, environmental management, and chain-of-custody gaps typical of artisanal mining elsewhere	U.S. government regulation plus direct sourcing relationships; verifiable claims such as no child labor, fair working conditions, and post-mining rehabilitation	Constrained by geographic availability of specific gemstones; does not address broader global supply chain issues
Lab-grown alternatives (sapphires, emeralds, alexandrite)	Conditions at mining sites, including unregulated labor and site-by-site environmental variation	Controlled origin by definition—production occurs in a facility, not a variable mining context	A distinct product category; may not satisfy consumers who want natural stones, and raises pricing questions for them

Three approaches to ethical colored gemstone sourcing

Sourcing Approach

Primary Challenge Addressed

Verification Method

Key Limitation

Industry-wide collaborations (e.g., the Coloured Gemstones Working Group and the Gemstones and Jewellery Community Platform)

Lack of traceability and transparency across a fragmented global supply chain, formalized in the RJC Code of Practices since 2019

Shared resources and due diligence tools for participating brands and suppliers

Effectiveness depends on broad industry participation; universal adoption across diverse mining contexts remains a challenge

Transparent domestic sourcing (e.g., Montana sapphires)

Labor practices, environmental management, and chain-of-custody gaps typical of artisanal mining elsewhere

U.S. government regulation plus direct sourcing relationships; verifiable claims such as no child labor, fair working conditions, and post-mining rehabilitation

Constrained by geographic availability of specific gemstones; does not address broader global supply chain issues

Lab-grown alternatives (sapphires, emeralds, alexandrite)

Conditions at mining sites, including unregulated labor and site-by-site environmental variation

Controlled origin by definition—production occurs in a facility, not a variable mining context

A distinct product category; may not satisfy consumers who want natural stones, and raises pricing questions for them

Read together, the rows show why a single "conflict-free" model is insufficient for colored gemstones: the problems being solved are genuinely different. A brand citing the CGWG is working on systemic transparency; a brand selling Montana sapphires is offering jurisdiction-level accountability; a brand selling lab-grown stones is changing what "sourced" means entirely. None of these is interchangeable, and a marketing claim that blurs them—borrowing the rigor of one approach to sell another—deserves scrutiny.

Why Ethical Sourcing for Colored Gemstones Is So Hard—and the Three Strategies Brands Use to Fix It

The Unique Challenges of Ethical Gemstone Sourcing

Strategy 1: Industry-Wide Collaborations for Transparency

Tags

Strategy 2: Transparent Domestic Sourcing

Strategy 3: Lab-Grown Gemstones as an Ethical Alternative

Ethical Gemstone Sourcing Strategies: A Comparative Framework

Making Informed Choices in Ethical Gemstone Jewelry

Sources

Related articles

Enamel or Lacquer? How to Read the Visual Signatures of Hand-Painted Watch Dials

What Separates a Collectible Vintage Watch From a Merely Old One: A Five-Factor Diagnostic

Two Icons, Two Gambits: How AP and Patek Philippe Are Stretching Their Most Famous Designs

18K Yellow, White, or Rose Gold: How to Choose the Right Alloy for Fine Jewelry